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Contributor
Contributor
1,817 Views
Registered: ‎02-06-2017

vcu1525 status leds

Hello, I've been trying to use the status leds (DS3) visible through a cut-out in the PCIe end bracket IN A VCU1525 to get some feedback. However, I've not had any success. I've believed the design is being correctly programmed in the device as the driver recognizes de PCIe device with the configured device and vendor ids. In desperation I've tried to apply a constant high value to the pins related to these leds (BA20, BB21, BC21) to see if the leds will be always on or off (depending if they're active low or high), but the yellow leds is constant, the green one is blinking and the red one is turned off. Below I show the block design an io assignment for this test. What I'm doing wrong? I'm I even able to control these leds?

 

Thank you in advance

Screenshot_2.png
Screenshot_1.png
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Moderator
Moderator
1,717 Views
Registered: ‎04-12-2017

Hello @josecm,

 

Yes, you can use these LEDs for status indication.

Can you please share how you have applied constraints for these LEDs ?

ds3.JPG

they should be something like above. you can refer master constraint file given under user guide.

 

Thank you.

 

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Contributor
Contributor
1,705 Views
Registered: ‎02-06-2017

@kvasantr thank you for your answer- Above I already show the I/O ports tab which I believe has these constraints. Nevertheless, below I show a screenshot of the xdc file with the led constraints.

Screenshot_3.png
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Observer
Observer
1,675 Views
Registered: ‎06-20-2013

I observe the same behavior as josecm when trying to write to the Status LED's (DS3).

 

I get a blink on Green and Red is always off.  I have not yet tried to drive the yellow LED.

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Observer
Observer
1,420 Views
Registered: ‎11-25-2011

I also observe the same behavior. We are not able to access the Red, Green and Yellow LED's from the FPGA.

How should we control these LED's from FPGA?

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Visitor
Visitor
1,054 Views
Registered: ‎09-28-2018

Does anybody figure this out yet? It has been quite some time...

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Contributor
Contributor
1,030 Views
Registered: ‎11-19-2018

Hi, 

it seems we are only able to manage the state of the yellow led from the FPGA. We implemented multiple designs by now where we successfully used it to debug and status information. We are also unable to get the green and red leds to the state we want from the FPGA.

Additionally, it is worth mentioning that we ran the system controller on the board and we were able to get the green and red leds to blink.

Best Regards,

Jose

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Visitor
Visitor
969 Views
Registered: ‎09-28-2018

Ah, that clarifies things so much. Thank you!

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